Roller-bearing spring-insert



J. M. HAMILTON AND P. A. BUUY.

ROLLER BEARING SPRING INSERT.

APPLICATION FILED MAY 2. I918 1 ,313, 1 83.. Paivnind Aug. 12,1919.

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UNITED stfiATEs PATENT OFFi EE.

JOHN M. HAMILTON AND PEARLE A. BUOY, 0F LOS ANGELES, CALIFORNiA.

ROLLER-BEARIN G SPRING-INSERT.

Specification of Letters Patent.

Patented Aug. 12. 1919.

Application flied May 2. 1918. Serial No. 232,117.

To all rllwm may ransom."

Be it. known that we, Jonx M. l-l'amuros and lmn'm: A. Biol. both citizens of the United States. residing at Los Angeles, in the county of Los Angeles. State of (alifornia. have invented new and useful Iniprovements in Roller-Bearing Spring-in- .serts,.of \vhirh the following is a speeifiration. (L,

This invention relates to anti-friction 'n onus inserted between the leaves of springs sli h as are used upon automobiles. railway cai riages and other vehicles. The primary 0 ct. of this invention is to rednve frictlo' generated by superimposed leaves of sp ngs sliding upon one another.

The particular objects of this invention 4 nre to provide a deviee of such construction lnnalmost invisible. practically dust.

flexible enough to readily conforms movement of the spring lea vos. easilyinstnlle'd in springs already in serviee. which will ar ns-an oil retainer) which is pc-isitively an -borer '1 position. and" whii'h reduces spring frietlon to'a lnumuum.

'e aeifinnplish these objects by means of the emlnnl inn-nt of our invention illustrated in the aeeolnpanying drawing. in \vhirh:

Figure I is an enlarged side elevation of an insert partlv in section. Fig. 2 is a plan view of Fig. l; 11 Fig. 3 is a side elevation partly in sertionf a spring havinwinserts therein. Fig. 4'is plan view ofithp spring shown in Fig. 3. Fig. 5 is an enlarged sertion as seen on the line .'i-5 of Fig. 3.

Referring more particularly to the drawin". the sparing member is indirate d generall:\' by ti. lt ronsists of a nob 7 and side fl; F mnstrueted :prefmnhly of'flexihlo sheet metal. The side flanges are bent upwardly from the web and tht n downwardly. Slots 9 are out in the flanges to make tho same flexible and also serving as anchoring means to engage the spring clips.

The upward extensioni fthe side flange is designed to rem-h the upper leaf of a spring and the lower bend to overlap the lower leaf.

Lips 'ldnro rut and resscd from the web forming slots in \\'l\i('l rollers 11 are disposed and retained in place by the lips. 'lhese slots are disposed between the flange :-lols,lhus. nmiutaining the insert at its maxi- 'llus rollers do not extend the full length of the web as will be noted from Figs. l and it has been found by experiment that it is unnecessary to extend the rollers to a very great distance from the outside ends of the leaves. as ractioally all the frietion is generated at t e ends. For this reason the inserts are made short and anchored in position between the leaves. The upward bend of the side flanges with the lips 10 forms an oil retainer.

Referring particularly to-Figs. 3. 4, and

the leaves 12 of a swing have clips 13 r for clamping together t e ends of the same. The inserts are placed between the leaves 12 so that the ends containing the roller lwaringsi extend to the outside edges of the leaves. The flanges adjarent the clips and upon both sides thereof are bent outwardly as indieated by 14 to form anchoring projections engaging the elipsnnd prerentin disfilarement ofthe inserts.

he inserts may be installed in springs alreadyin use on cars by merely removing the spring clips 13. spreading the leaves 12 apart and inserting the inserts with the roller ends outward and even with the ends of the leaves. The clip is now replaced, and the srrliulls of the flange adjacent the (lips bent outwardly. thereby firmly securing t e inserts in position. In some cases the rollers will neressarily extend inside as well as outside of the spring rlips. The frirtion of the sprin leaves between which an insert is llltll'Wl grip the flat end of the insert and assist in holding it in position. The side flanges also serve to hold the insert in alinoment.

The rollers are housed in the spring insert in a substantially dust proof came. The cage aiso arts as an oil retainer. 'lhe insert is positively. held in alinelnent and against einlwiso disphu-l-nu-nt. It will also be noted that the insert is self eontainerhmnd in installing the same it is not necessary to place the rollers in position in the eage the lather having the rollers already in position.

l/Vhatwe rlaim is: T

1. An anti-frietiou device for interposition between the l. ..ves ofsprings eomprlS- ing ii paringdnember. and an anti-friction member jonrnaled in said spaeingauember, said member having slotted flexible side flanges forming tongues for cooperation with a (-lip so as to provide anchoring means to secure said member to the spring against endwise displacement.

'2. .'\n anti-fl'irtion device. for interposition between the leaves of springs eo1nprising a spacing member, and an anti-friction member journalcd in said spacing member, said spacing member being l)l'0\'1(l8(.l ]tll flexible side flanges and having retaining 5 projections adapted to be disposed behind An anti-friction device for interposition between the leaves of springs rompr1sing a spacing member, and an anti-trn-tmn member journaled in said spacing lm-mber,

said smcing member having slotted flexible side anges extending above and below the web 50 as to provide retaining projections adapted to be disposed behind clips.

4. An anti-friction device for interposiand having anchoring means thereon to secure said spacing member to the spring against endwise displacement, the web of said spacing member being slotted and hav ing retaining lips upset therefrom to form a cage for the roller.

5. An anti-friction device fqiginterposition between the leaves of springs comprising a spacing.' member, and a rollerjuurnaled in said member, said spacing member comprising flexible side flanges extending above and below the web thereof and having retainin projections ada )ttKl to be disposed behin clips, the web 0 said spacing member being slotted and having retaining lip.-I upset therefrom to form a cage for ll"! roller.

In witness thatwe claim the foregoing we have hereunto subscribed our names.

JOHN M. HAMILTON. PEARLE A. BUOY. 

